title: A 56-year-old woman with severe chronic constipation: what is the underlying pathology?
authors.affiliation: Department of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Korea.
authors.forename: Kyu Hyun
authors.initials: KH
authors.lastname: Yoon
authors.forename: Chang Hwan
authors.initials: CH
authors.lastname: Choi